US1816754A - Fourdrinier machine - Google Patents

Description

July 28, 1931.

.1. A. WHITE FOURDRINIER MACHINE Filed Nov, 20- 1930 4 sheets-sheet [d Mm@ July 2s, 1931. 'J. A. WHITE' 1,816,754

` FOURDRINIER MACHINE Filed Nov. 20, 1930 4 Sheets-Sheet 2 July 28, 1931. J. A. WHITE I FOURDRINIER MACHINE v Filed Nov. 20 1950 4 Sheets-Sheet 3 ay 28, 1931. l J.YA. wHaTE- l1,836,754

FOURDRINI ER MACHI NE y Filed Nov; 20- 1930 4 sheets-sheet 4 Patented July 28, 1931 lJosEIiII A'rwoon WHITE, on MELROSE PARK,

PENNSYLVANIA, AssIeNoR 'ro THE .IVIORE & WHITE COMPANY, 0F PHILADELPHIA, PENNSYLVANIA, A CORPORA- TION 0F PENNSYLVANIA FOURDRINIER MACHINE Application led November 20, 1930. Serial No. 497,039.`

My invention relates to certain improvements in paper-making machines of the F ourdrinier type.I

One object of the invention is to improve and simplify the construction of a Fourdrinier paper-making machine so that the paper. making section oit'l the machine can be readily adjusted at two points, one point at the breast' roll and thev other point between the making section and the suctionbox section.

Y Another object 'of the invention is to make the machine in two sections, in which the delivery end of the paper-making .section is supported by the suction box section.

A furtherobject of'thelinvention is to provide rockers at the breast roll end of the machine supported on one .of the beams of the frame of the machine, and rockersat the de livery end of the paper-makingsection supported by the suction boit section.

A still further object of the inventionis to make the supporting frames Afor the machine in the form of heavy castings, each casting having a deep throatfthrou'gh which the return run of the wire extends.-v

A further object'ot the invention is to so design the framesgthat they can be mounted on the ordinary foundations ot a Fourdrinier machine.

A still further object of the invention is to preventy thel spring or whipping of the side rails of the machine.

And a still further object of the invention Vis to so construct -the shakingr mechanism that the movement of one end of the table can be of a diii'erent length than at the opposite end of the table.

kA Ifurther.object of the invention is to pro- 'vide a seriesor: shaking mechanism for shaking the paper-making section of the frame, and to provide means for adjusting the shaking mechanism so as to regulate the radial movement of the frame.

i In the accompanying drawings:

Figs. ll and la are side views of a Fourdrinier machine illustrating my invention;

Fig. 2 is a plan view of one end and one side of the machine and ,illustrating the shakingmechanism'g` l Fig. 3 is a transverse sectional view on the line 3 3, Fig. l; v

F ig. 4 is a transverse sectional view on the 1in@ ir-4, Fig. ,1; i

Fig' is a transverse sectional view on the line 5 5, Fig. l; l

Fig. 6 is a detached perspective view of one ot the rocking elements at the delivery end ot the paper-making section of the machine;

Fig. part of thesupporting cam and base plate of the rocker at the suction' box end of the machine; and

Fig. 8 is a det-ached perspective view of one of the devices which prevent longitudinal movement of the making frame.

l are the supporting beams for the machine. Three are shown in the present instance. These beams extend the full width ot' the machine and rest on the foundations a. ln the present instance, these foundations mayy be the foundations of a standard machine so that if the improved machine is substituted for a machine of an older type, the original foundations can be used. Each supporting beam is made in the form of a single hollow casting having upper members 7 is a detached perspective view oi."

2 and lower members 3. These members are connected at one end only by a vertical member 4, and the upper and lower beams are spaced apart to form an extended throat 5, which is deep enough to allow the return run of the forming wire 6 to pass therethrough as shown/ clearly in Fig. 3. When the machine is running, the outer end of the upper o'verhanging section 2 is supported on the outer end of the lower section 3 by a block 7, tion from vibrating, but when it is wished to change the wire, this .block is removed ,and there is suiiicient strength in the structure to allow the overhanging portions 2 of the beams to support the load.l The beams are connected by longitudinal side members 8 and 9, Jforming a heavy rigid structure for supporting the machine.

10 is a breast roll. the trunnions 11 of which are mounted in hearings 12, secured to the side rails-13 of the making section of the machine which carries the rollers 14, over which the making wire 6 travels, these side bars and connections forming the carrying frame for the wire. The frame is supported at the'breast roll end by rockers 15,. The rockers consist of two pairs of wooden blocks 16, spaced apart, and each rocker is slightly rounded a't the upper and lower end shown in Fig. 6, and the rockers are supported on edge by a base plate 19, Figs. 4 and 7, having a semi-circular bearing 18 which rests on the cams 20, on a cam-shaft rails 13 ofthe paper-making section of the machine. The object of this adjustment is to raise or flower the feed end of the papermaking section of the machine. The opposite end of the wire supporting frame is carried by the suction box frame 26, which has a portion 27 which extends under the making wire frame and forms the base support for rocking blocks 28. similar in construction to the blocks 16. The upper ends of the blocks Q8 are mounted in cap plates 29 secured to the side bars 13 of the making wire frame.

ln order to adjust the suction box frame 9.6,

a hea Vy screw 3() is pivoted at 31 to the arched portion of the extension 27 of the frame, and this screw' extends through a nut 32 supportedby the intermediate beam l, and on the periphery of each nut are teeth which are engaged by a worm33 on a shaft 34 extending i across the. machine and mounted on the `vsupport l. and this shaft is turned by a handwhee 35. so that on turning the lhand-wheel the forward portion of the suction box frame can be raised and this in turn raises the outer portion ofthe making wire frame. tlierwise the two frames are entirely independent one from the other. The outer end of the suction boxI frame is pivoted at 3G, the pivot being adapted` to suitable bearings 37 on the side members 9. 38 are the suction boxes of the ordinary type, and 39 are supporting rollers for the wire. i i

`ln order to prevent the longitudinal movement of the making frame, a flexible connecltion 71, Fig. 8. `is provided at each sideof the machine.

T2 connected at 73 to the n'iaking frame and to a bracket 74 on a block 75 mounted on the forward transverse member of the main y Each flexible mechanism con-- .slsts 1n the present instance of a fiat spring bar frame, so thatwhile the making frame kis i therockers 16 are removed from under the bearings of the breast roll, the shoes 7 6 will -rest upon the blocks 75 of the mainframe and support the forward end of the making frame when the making wire is to be removed and a new wire placed in position.

At the delivery end of the machine is va couch roll 40, around which the making wire 6 passes. This couch roll in the present instance can be adjusted towards and from the supporting beam by means of screws 41 mounted in the beam 1, and each screw engages a sliding bearing 42, which supports the roll 40. Each bearing slides on a base plate 43, and the` screw hasa worm wheel 44 at one end meshing with the worm 45 on the shaft 46, which extends across the machine, and on which is a hand wheel 47 by which it is turned. 0n each bearing 42 is a pivoted bolt 48, which when the roller is moved to a position close to the beam 1, can be turned up to engage a slotted bracket 49 on thebeam 1,

so that the base portion of the bearing 42 can be removed', allowing the couch roll to hang from the brackets. AThe return run of the making wire 6 is supported on adjustable carrying rollers 50, which hold the wire against the bearing rollers 51, so that when the wire is in place the slack of the wire can be taken up by adjusting the rollers 50. rIhe means for adjusting these rollers are of the well known `type and need not be described, the rollers being shown simply in diagram. Whenit is wished to remove the wire, all that is necessary is to remove the blocks 7 and lowerthe rollers 50, and adjust the co'uch roll bearings so that the couch roll will be moved toward the'frame at the delivery end of the machine. This allows sufficient slack in the making wire so' that it can be removed laterally from the machine and another wire placed in position` after which the several parts are reassembled and the slack in the wire taken up.

The means for shaking the making frame of the paper-making machine is as' follows:

Above the block is a shoe/ 52 are three shaking stands in the present f instance. `These stands are mounted en a base 53 and they are spaced apart as shown, so that one stand will shake thev stand near the breast roll, and the second stand will shake the middle of the frame, and the thirdk shaft 6, mounted in suitable bearings 57.

gis

These bearings are mounted on the several stands. On the shaft are eccentrics 58, one located at each shake stand, and each eccentric actuates a rod 60, which in turn vibrates -a forked lever 61, which is connected to the side frame of thevpaper-making section of the machine by a pin 62, which is adapted to bearings 63. In order to vary the vibration of the frame of the making section of the machine, a disk Gais mounted in each stand as shown, and this disk has a slot therein, in which is ablock 66 having a pin 67, which engages the forked end ofthe lever 61. This disk can be turned in its bearings in the stand by a screw 68. On this screw is a block 69,

which is engaged by a lug 70 on the disk, so that when the screw is turned, the disk is turned in its bearings, and the position of the block 66 is altered. As the levers are fulcrumed on the pin 67, the position of the slots will vary the longitudinal movement ofthe levers which impart the shaking motion to the frame of the paper-making section of the machine. The outer ends, offthe levers 6l will give a vertical movement by'the eccen tries -58, through the rod 60, so that by this means the eccentricsfare all set alike on the shaft 56, and the vertical movement of the three levers is the same. By adjusting the disks of each stand so that the slots therein will be at different angles, the vibrator-y movement imparted by the mechanism can be varied'at each stand independently. As an example, the shaft 56 rotates from v20() to 500 revolutions per minute and the stroke of the lever 61 nearest theV breast` roll is about 578, while the strokeofthe lever at the intermediate stand is 1, and the stroke of the lever nearest the delivery end of the making section is about l/g'", through which a positive vibratory motion is imparted to the frame, and there is a greater movement at the breast roll than at. the delivery end of the paper-making section. By the above de scription it will, be seen that thev making section and suction box section of the machine are firmly supported on heavy beams, which are connected together, and that the making section' ofthe machine is independent of the Asuction box section, and can be vibrated to, any'desired extent without interfering with the suction box section, and the breast roll end of the machine can be raised and lowered independently of the delivery end, and the delivery end is raised and lowered with the suction box section. The parts are so'proportioned that by simply retracting the couch roll and dropping the tension rolls 50, there is enough slack provided in the wire toallow for the removal of one endless wire and substituting a new wire therefor, and as the making section of the machine is supported on vertically arranged blocks, preferably of wood, and rounded at their ends, the making section of the machine can be shaken accurately and by providing' the three shaking stands any amount of lateral motion can be given the carrying fraaie of the making scction of the machine. The adjusting means are so arranged that adjustments can be made while the machine is running and tbc shaking mechanism can also be adjusted while the machine is running. lVhilc I have i1lus trated a preferred construction, in which three shaking stands are provided, it will be understood that two stands may be used in some instances, or more than three if dcsirable.

I claim:

l. The combination in a paper-making machine of the Fourdiinier type, of support- ,ing beams extending .from one side of the machine to the other, each supporting beam having upper and lower members, connected at one end only, to form an elongated throat for the return run of the making wire; longitudinal side members connecting the several supporting beams; and a making frame mounted above the base frame formed by the beams and longitudinal side members.

2. The combination in a paper-making machine, of the Fourdrinier type, of a series of transverse supporting beams having upper and lower sections, connected at one end onlv,

and forming 'an elongated throat for the return run of themaking wire; longitudinal side members connecting the several supporting beams; ay removable block supporting the upper member at the open end of the throat; paper-making frames mounted on the beams; means for vibrating the `making section of the frames; and means attached to one of the beams and making frames, preventing longitudinal movement of the frame.

3. The combination in a paper-making machine of the Fourdrinier type, of a base frame; a making frame mounted above the base frame and having rockers; a suction box frame having suction boxes thereon, the suction frame extending under the forward delivery end of thef making frame and supporting the delivery end of said making frame; a breast roll on the making frame; a couch roll; and an endless wire extending over the making frame and suction box frame, and returning under said frames.

t. The `combination of a base frame made up of a series of transverse supporting beams, each beam having an elongated throat for the return wire: longitudinal side members connecting the beams; a making frame mounted above the forward end of said frame; a breast roll carried by the making frame; rockers supporting the frame near the breast roll; means for removably holding the rockers in position; a suction box frame pivoted to the main frame at the delivery end, and the forward end ol' said frame extending IUU lll)

under thedelivery. end of the making frame;

rockers between the extension of the suction box frame and the delivery end of the makin frame; a` couch roll at the delivery end o the machine; and an endless wire extending around the breast roll and over the making frame and suction box frame, and around the couch roll, returningthrough thethroats,

of the transverse supporting beams.

5. The combination in a Fourdrinier paper-making machine, of a making frame having a series of rollers thereon; a 4suction the forward endY of the suction a breast rolll at' the" forward end ot the box frame independent of the making frame; a couch roll at the forward end of the making frame; rockers mounted between the baseb frame andthe-making frame near the couch roll; and a' second set of' rockers mounted under the delivery end of the making frame.

6. The combination in a Fourdrinier paper-making machine, of a making frame; a suction box frameseparate fromlthe making frame and pivoted at the delivery end; means for vertically adjusting the forward end of the suction box frame; rockers supporting the delivery end of themaking)A frame on ox frame;

making frame fand rockersmounted near the breast roll.

7. The combination in a Fourdrinier paper-making machine,.of a making Iframe.;

a breast roll at the forward end ofthe making frame; a suction box frame with suction boxes thereon; a base frame supporting Y both the making frame and the suction box frame, said suction box trame being'pivoted v at the delivery end to the main frame.; means for vertically adjusting .the suction box vframe, said frame extending under the makin frame; a rocker at each side ofA the machine supported by the suction box frame and supportmg the delivery end of the making frame; rockersunder the frame near the vbreast roll; exible means connecting the making frame; means for vertically adjustingthe suction box frame;- rockers on the forw'a.r iend of the suction box frame and supporting the delivery end. of the making frame; adjustable'frockers supporting the ybreast roll end of the making'iframe; and

means :for supporting the making frame on the main frame when the rockers at the breast 1 roll end of the machine are removed.

9. rlhe combination in a Fourdrinier paper-making machine, of a base frame; a

making frame mounted above the base frame; a suction-box framepivotally mounted on t e main frame and extending under the delivery end of the making frame; a pair of' wooden rockers mounted between the forward end of the suction box lframe and the making frame; and a pair of Wooden rockers mounted on each side of the machine at the breast roll end of the making frame.

10. rlhe combination inv rocking mechanism for Fourdrinier paper-making machines, of two wooden rockers placed side a driving shaft; eccentrics on the shaftat' each stand; two sets of levers, one at one stand and the other at the other stand; an

eccentric rod actuated bythe eccentric of each stand and connected to the outer end of its lever; and means on each stand for varying the longitudinal movement ot the levers by which lateral vibrating motion is 1mparted to the making section of the machine.

12. The combination ina base frame, of Y a making wire section mounted on the base frame; a series of rocker stands located at one side of the machine; an eccentric on each rocker stand; means for rotating said eccentrics; a lever extending from each lrocker stand to the making section of the machine; eccentric rods connecting the ecce'ntrics with the outer ends of their levers; and means for varying the longitudinal movement of each lever, sov that the vibratory movement at one end of the paper-making section of the machine will be different from that at the opposite end of the said section.

13. The combination in a paper-making machine, of a base frame; a making section mounted on the 'base frame; three rocker stands located at one 'side of the machine; an eccentricl at each rocker stand; means for rotating said eccentrics lin unison; a lever extending from each `shaking stand to the side of the making section of the machine; an adjustable disk mounted in each Fourdrinier stand, having a slot therein; a block mounted `in each slot, having a pin on which a lever is pivoted; an eccentric rod connecting the eccentric at each stand to the end of its lever; and means for adjusting each disk so as to var-y the longitudinal movement of the several levers, so that the lateral shaking movement of the makin frame will be greater at the feed end of the rame than at the delivery .end thereof, the three levers imparting a 'positive motion to the said frame.

14. The combination in a Fourdrinier machine, of a base frame; a making frame mounted on the base frame; rockers supporting the making frame, whereby lateral movement of the frame is permitted; a shaking stand; levers extending from the stand to the making sec'tion of the machine; means for imparting a longitudinal movement to the levers to shake the making frame on its rockers; and a strut extending from the base frame of the machine to the rocker stand, rigidly connecting the rocker stand with the base frame.

15. The combination of a base frame; a making frame mounted above the base frame; two sets of rockers supportingthe said making frame; a breast roll at one .end of the making frame, the rockers at the breast roll consisting of vertically arranged blocks l0- cated at each side of the machine; base plates and cap plates, each lower block being mounted in a base plate and the upper ends `of the blocks being mounted in the cap plates secured to the making frame, the base plates having l segmental recesses therein; a cam shaft extending across the machine; cams thereon adapted to the segmental recesses of the base plates, the bearings for the said shaft mounted on the base frame of the machine; and means for turning the shaft to raise and lower the base plates.

16. The combination of a base frame; a making wire section having a breast roll at one end; a suction box section; and two sets of rockers, one set of rockers at'the breastl roll end of the machine being mounted on the main frame, the other set of rockers being mounted on the suction box section of the machine, the rockers of each set being arranged in pairs.

17. The combination of a base' frame; a makin wire section having a breast roll at one en a suction box section; and two sets of rockers, one set of rockers at the breast roll end of the machine being mounted on the main frame, the other set of rockers being mounted on the suction box section of the machine, the rockers of each set being arranged in pairs, the rockers being rounded at the upper and lower ends and adapted to rock in base plates and cap plates.

JOSEPH ATWOOD WHITE.

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